diff --git a/firmware/controllers/algo/engine.cpp b/firmware/controllers/algo/engine.cpp
index c1b27e5116..0aad3add45 100644
--- a/firmware/controllers/algo/engine.cpp
+++ b/firmware/controllers/algo/engine.cpp
@@ -190,9 +190,6 @@ void Engine::reset() {
  * so that we can prepare some helper structures
  */
 void Engine::preCalculate(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
-	sparkTable.preCalc(engineConfiguration->sparkDwellRpmBins,
-			engineConfiguration->sparkDwellValues);
-
 #if HAL_USE_ADC
 	adcToVoltageInputDividerCoefficient = adcToVolts(1) * engineConfiguration->analogInputDividerCoefficient;
 #else
diff --git a/firmware/controllers/algo/engine.h b/firmware/controllers/algo/engine.h
index 5654764c94..4d7480f19c 100644
--- a/firmware/controllers/algo/engine.h
+++ b/firmware/controllers/algo/engine.h
@@ -283,12 +283,6 @@ public:
 	 */
 	uint32_t engineCycleEventCount = 0;
 
-	/**
-	 * fast spark dwell time interpolation helper
-	 * todo: finish the implementation and
-	 */
-	Table2D<DWELL_CURVE_SIZE> sparkTable;
-
 	/**
 	 * fast kg/hour MAF decoding lookup table with ~0.2 volt step
 	 * This table is build based on MAF decoding curve
diff --git a/firmware/util/containers/table_helper.h b/firmware/util/containers/table_helper.h
index 504ed750df..24d4cf6937 100644
--- a/firmware/util/containers/table_helper.h
+++ b/firmware/util/containers/table_helper.h
@@ -36,6 +36,7 @@ private:
 	float multiplier;
 };
 
+/*
 template<int SIZE>
 class Table2D {
 public:
@@ -45,7 +46,6 @@ public:
 	float bTable[SIZE];
 	float *bin;
 };
-
 template<int SIZE>
 Table2D<SIZE>::Table2D() {
 	bin = NULL;
@@ -69,7 +69,7 @@ void Table2D<SIZE>::preCalc(float *bin, float *values) {
 		bTable[i] = y1 - aTable[i] * x1;
 	}
 }
-
+*/
 
 template<int RPM_BIN_SIZE, int LOAD_BIN_SIZE, typename vType>
 void Map3D<RPM_BIN_SIZE, LOAD_BIN_SIZE, vType>::init(vType table[RPM_BIN_SIZE][LOAD_BIN_SIZE],